Characterization of silicones by direct-deposition GC/FT-IR

✍ Scribed by Bonanno, Anthony S. ;Griffiths, Peter R.

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 594 KB
• Volume: 18
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240180505

✦ Synopsis

Materials used in the manufacture of silicone breast prostheses were analyzed by supercritical fluid chromatography (SFC) and high temperature gas chromatography (GC) coupled with direct deposition FT-IR detection. The chromatographic resolution and deposition quality were found to be unsatisfactory for SFC/FT-IK; however, high temperature GC/FT-IR produced excellent results. The chromatograms and spectra obtained allowed for the identification of poly-dimethyl silicones and mono-, di-, and tri-diphenylsubstituted poly-dimethyl silicones. An automated method of baseline correction was developed that allowed functional group chromatograms due to molecules containing Si-phenyl bonds to be constructed without significant interference from Si-methyl bonds despite the fact that the Si-C stretching mode of Si-phenyl bands overlapped significantly with the strong bands due to Si-CH3 groups.